Publications by authors named "Tlemsani C"

Article Synopsis
  • Sarcomas are not typically associated with Lynch Syndrome (LS), but recent literature suggests a connection, prompting a national study to investigate their characteristics in LS patients.
  • The SarcLynch study included 81 patients, finding that 83% had soft-tissue sarcomas, particularly pleomorphic variants like undifferentiated pleomorphic sarcoma and pleomorphic rhabdomyosarcoma, with 40% having sarcoma as their first cancer event.
  • Results showed a high prevalence of mismatch repair deficiency and promising responses to immune checkpoint inhibitors, suggesting the need for screening and potential immunotherapy for these sarcomas.
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Introduction: The low incidence and heterogeneity of sarcomas limit understanding of their progression in metastatic cases. The use of metastasectomy is debated due to lack of consensus and evidence-based data. This study aimed to identify simple prognostic factors that could contribute to the therapeutic strategy.

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Article Synopsis
  • The study aimed to assess how well artificial intelligence (AI) can detect lung metastases in preoperative CT scans compared to radiologists.
  • AI was applied to CT scans of 167 patients, showing that it detected a high percentage of true nodules and significantly improved the overall sensitivity when used alongside human radiologists.
  • The findings suggest that AI not only enhances detection rates but can also identify cancers earlier, which could be beneficial for patient care.
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Sarcomas are a diverse group of rare malignancies composed of multiple different clinical and molecular subtypes. Due to their rarity and heterogeneity, basic, translational, and clinical research in sarcoma has trailed behind that of other cancers. Outcomes for patients remain generally poor due to an incomplete understanding of disease biology and a lack of novel therapies.

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  • The study examines the effectiveness and safety of immune checkpoint inhibitors in patients with Li-Fraumeni syndrome, a condition that increases cancer risk.
  • Researchers conducted a series of cases to assess patient responses to this type of cancer treatment, gathering data on outcomes and side effects.
  • Findings suggest that immune checkpoint blockade may offer potential benefits in treating cancers in individuals with Li-Fraumeni syndrome, but further research is needed to confirm these results.
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De novo germline pathogenic variants (gPV) of the BReast CAncer 1 (BRCA1) gene are very rare. Only a few have been described up to date, usually in patients with a history of ovarian or breast cancer. Here, we report the first case of an incidental de novo BRCA1 germline pathogenic variant which was identified within the framework of the Plan France Médecine Génomique (PFMG) 2025 French national tumor sequencing program.

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Little is known about immune checkpoint inhibitors (ICI) response of NF1-mutated lung adenocarcinomas. 341/4,181 (8.2%) TCGA lung adenocarcinomas samples have a somatic NF1 mutation.

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Background: We investigated the impact of the implementation of a network of reference centers for sarcomas (NETSARC) on the care and survival of sarcoma patients in France since 2010.

Patients And Methods: NETSARC (netsarc.org) is a network of 26 reference sarcoma centers with specialized multidisciplinary tumor boards (MDTBs), funded by the French National Cancer Institute (INCa) since 2010.

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The National College of Cancerology Teachers (CNEC) was created in September 1986. Its missions are to develop the teaching of oncology, to promote educational actions in the discipline, to participate in the development of teaching content and the definition of curricula and the control of knowledge for the training of medical students and specialists, to develop and validate educational documents relating to the above teaching, to ensure the representation of oncology teaching to of the National University Council (CNU) and administrative authorities, to ensure and coordinate relations with other university disciplines, scientific societies, national, European, and international professional groups, and to contribute to the development of research in the discipline. The current office was elected in September 2022 for three years.

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Unlabelled: Sclerosing Epithelioid Fibrosarcoma (SEF) and Low Grade Fibromyxoid Sarcoma (LGFMS) are ultrarare sarcomas sharing common translocations whose natural history are not well known. We report on the nationwide exhaustive series of 330 patients with SEF or LGFMS in NETSARC+ since 2010.

Patients And Methods: NETSARC (netsarc.

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Introduction: is a tumor suppressor gene encoding neurofibromin, an inhibitor of the RAS/MAPK and PI3K-AKT-mTOR signaling pathways. germline pathogenic variants cause the tumor predisposition syndrome neurofibromatosis type 1. Targeted therapies (MEK inhibitors) have been approved for benign nerve sheath tumors in neurofibromatosis type 1 patients.

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Epithelioid Hemangioendothelioma: A NATIONWIDE STUDY: Epithelioid hemangioendothelioma (EHE) is an ultrarare sarcoma whose natural history and treatment is not well defined. We report on the presentation and outcome of 267 patients with EHE in the NETSARC+ network since 2010 in France.

Patients And Methods: NETSARC (netsarc.

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Article Synopsis
  • The study focused on the prevalence and impact of pain in patients diagnosed with desmoid-type fibromatosis (DF), analyzing data from 382 participants.
  • Pain was found in 36% of patients, significantly linked to larger tumor sizes and specific locations like the neck and shoulders, affecting quality of life and mental health.
  • Furthermore, patients experiencing pain had poorer event-free survival rates, highlighting the need for better management strategies for those affected.
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This review provides an overview of histopathology, clinical presentation, molecular pathways, and potential new systemic treatments of high-grade chondrosarcomas (CS), including grade 2−3 conventional, dedifferentiated, and mesenchymal CS. The diagnosis of CS combines radiological and histological data in conjunction with patient clinical presentations. Conventional CS is the most frequent subtype of CS (85%) and represents about 25% of primary bone tumors in adults; they can be categorized according to their bone location into central, peripheral, and periosteal chondrosarcomas.

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DNA methylation is a key regulator of gene expression and a clinical therapeutic predictor. We examined global DNA methylation beyond the generally used promoter areas in human small cell lung cancer (SCLC) and find that gene body methylation is a robust positive predictor of gene expression. Combining promoter and gene body methylation better predicts gene expression than promoter methylation alone including genes involved in the neuroendocrine classification of SCLC and the expression of therapeutically relevant genes including , and .

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Background: Sarcopenia is observed in about 50% of cancer patients. Cancer-related sarcopenia negatively affects survival and is a predictive factor of anticancer drug toxicity. Sarcopenia diagnosis is challenging in routine care.

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Nuclear protein in testis (NUT) carcinomas (NC) are a rare, highly aggressive, subset of squamous cell carcinomas, characterized by a translocation involving the gene. Thyroid location of NUT carcinomas has rarely been described. We report here two cases of thyroid NC with translocation.

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Background: Pazopanib (PAZ) is an oral angiogenesis inhibitor approved to treat soft tissue sarcoma (STS) but associated with a large interpatient pharmacokinetic (PK) variability and narrow therapeutic index. We aimed to define the specific threshold of PAZ trough concentration (Cmin) associated with better progression-free survival (PFS) in STS patients. Methods: In this observational study, PAZ Cmin was monitored over the treatment course.

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The national reference network NETSARC+ provides remote access to specialized diagnosis and the Multidisciplinary Tumour Board (MTB) to improve the management and survival of sarcoma patients in France. The IGéAS research program aims to assess the potential of this innovative organization to address geographical inequalities in cancer management. Using the IGéAS cohort built from the nationwide NETSARC+ database, the individual, clinical, and geographical determinants of the 3-year overall survival of sarcoma patients in France were analyzed.

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Cancer patients are a highly vulnerable group in the COVID-19 pandemic and it has been necessary for oncology units to adapt to this unexpected situation. We present our management of outpatients with cancer during the pandemic. We applied two major adaptations: extending the intervals between injections for maintenance therapy and protocol adaptation for patients with comorbidities.

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Background: The risk of drug-drug interactions (DDI) has become a major issue in cancer patients. However, data in sarcoma patients are scarce. We aimed to evaluate the frequency and the factors associated with DDI with antitumor treatments, and to evaluate the impact of a pharmacist evaluation before anticancer treatment.

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Because tobacco is a potent carcinogen, secondary causes of lung cancer are often diminished in perceived importance. To assess the extent of inherited susceptibility to small cell lung cancer (SCLC), the most lethal type of lung cancer, we sequenced germline exomes of 87 patients (77 SCLC and 10 extrapulmonary small cell) and considered 607 genes, discovering 42 deleterious variants in 35 cancer-predisposition genes among 43.7% of patients.

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Article Synopsis
  • Biallelic pathogenic variants in the NTHL1 gene are linked to a hereditary cancer syndrome, increasing risks for adenomatous polyposis and colorectal cancer, as well as other tumors like breast and brain cancers.
  • The study, using data from the French oncogenetic consortium, describes 10 patients with these variants, identifying them as the second-largest series on NTHL1, all of whom showed signs of adenomatous polyps.
  • The findings suggest that testing for NTHL1 should be included in diagnostic panels for hereditary cancers, with recommendations for colon and extra-colonic cancer surveillance based on existing guidelines.
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